#Piano soundboard pdf#

If it would be placed into a piano frame having a shoulder as indicated by 33 in Fig.

The soundboard is now ready to act in a piano in the nature of a diaphragm. The soundboard 9 is thereby subjected to a compressive stress on the under side and a tensile stress on the upper side. the wood are under compression at the concave side, whereas the fibers of the wood at the convex side are stretched or are under tension. 2 and the lower surface or the underside of the soundboard is given a concave surface. By this action, the convex sur face 22 of the soundboard 9 is given a greater convexity than is shown in Fig. The soundboard 9 is then pressed downward against the convex sur-j face 26 of the caul 25 until it conforms with the convex shape 26. This caul has an upper surface 26 of convex shape of less curvature than the curvature of the convex side of the soundboard 9 of Fig. 2 at hand, the soundboard is placed with the plane surface 2| lowermost and the convex surface 22 uppermost, upon a caul 25, as shown in Fig. 5, and of a cross section such as shown in Fig. With a soundboard of the shape indicated by 23 in Fig. 1, which final shape corresponds to a grand piano soundboard shape. 1, the exterior configuration indicated by 23 shows the shape of the board before it is out in outline to its final shape as is indicated by 24 in Fig. soundboards or resonant strings Fastenings thereof

G10C- PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS.

206010049979 Airway complication of anaesthesia Diseases 0.000 description 1.

Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Steinway and Sons filed Critical Steinway and Sons Priority to US67627A priority Critical patent/US2070391A/en Application granted granted Critical Publication of US2070391A publication Critical patent/US2070391A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Steinway and Sons Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US67627A Inventor Paul H Bilhuber Current Assignee (The listed assignees may be inaccurate.

#Piano soundboard pdf#

Google Patents US2070391A - Soundboard for pianosĭownload PDF Info Publication number US2070391A US2070391A US67627A US6762736A US2070391A US 2070391 A US2070391 A US 2070391A US 67627 A US67627 A US 67627A US 6762736 A US6762736 A US 6762736A US 2070391 A US2070391 A US 2070391A Authority US United States Prior art keywords soundboard board piano convex bridge Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.